This is what I end up doing with about 75 percent of my CSA and garden tomatoes. I know some people are funny about tomato sauce – prefer canned, picky about variety, need to seed or skin – but I just love to cook down whatever tomatoes I have and see what happens. It’s particularly good as a pizza sauce.
1 tbsp olive oil
1 onion, chopped
8-9 large tomatoes, or equivalent (I like to use a mix of types), chopped
2 tbsp tomato paste
plenty of salt
splash of white or red wine (optional)
dash of red pepper flakes (optional)
some chopped basil (optional)
Heat oil in a pot. Throw in onion and cook until soften. Stir in tomato paste and cook a minute. If using wine, stir in here and cook another minute or two.
Dump in tomatoes. Simmer for 20 minutes. Remove from heat. Blend sauce with immersion blender. If it seems really watery, add a little more tomato paste. Cook another 20 minutes. Season with salt, and add red pepper flakes or basil if desired.